Improvement in grain-separators



STANFORD '& CRANE.

Grain Separator.

Patented May 5. 1863.

IL PETERS. FhMn-Lkbondur, Wz-Pu UNITED SrATEs' PATENT OFFICE.

OTIS w. sTANFoRp, OF MAsON, AND ANDREW W. ORANE, 0F LEBANON, OHIO.

IMPROVEMENT IN GRAlN-SEPARATORS.

Specification forming part of Letters Patent No. 38,425, dated May 5, 1863.

To all whom it may concern.-

Be it known that we, Orrs W. STANFORD, of Mason, and ANDREW W. CRANE, of Lebanon, both in Warren county, Ohio, have invented a new and, useful Improvement in Winnowing-Mills; and we do hereby declare the following to be a full,.clear, and exact description thereof, reference being had to the annexed drawings, making part of this specification.

Our improvement relates to, first, a means of more fully availing the wind from the fan; second, a provision to lessen the waste of grain, especially of the lighter kinds, by preventing its being blown over along with the chaff.

Figures 1, 2, 3, and 4 are, respectively, a perspective view, a vertical and a horizontal section, and a side elevation of a mill embodying our improvements.

That portion, A, of the external case which contains the shoe is made throughout its length so much wider than the part, A, which contains the fan 0, as to permit the lateral agitation of a shoe, B, whose interior width is equal to or somewhat in excess of that of the fan-case A, the beneficial effect of said relative proportions of shoe and fan'case being that the entire body of wind is compelled to enter the shoe, instead of partially escaping between the shoe sides and the casing.

In order to adapt the machine for use with all conditions of grain, and particularly for those which contain a large amount of chaff of nearly equal specific gravity with a portion of the seed-such as wheat which has been thrashed on the barn-floor, and every description of grass seed-we provide in the upper rear part of the shoe, immediately beneath the hopper, and substantially out of range of the blast, a riddle, D, composed of a series of parallel rods, d, set longitudinally of the shoe, and declining slightly backward. The grain, being first received upon said riddle, is subjected to protracted violent agitation, with only so much wind as to blow off the lighter refuse, the effect being to cause the grain to drop through the intervals of the riddle onto a chute, E, which conducts it onto the usual series of screens, while the chafi and other refuse, falling over the lower edge of the riddle, traverses the blast and is blown away.

In order to insure a thoroughly effective agitation with especial reference to the riddle D, we hang and shake our shoe in the followin g manner: The back of the shoeis suspended by two links, F F, to the sides of the case A.

From the lower front part of the shoe there projects an arm, G, which rests loosely upon a beam, H, which is loosely hinged or pivoted at one end to the case A, and is supported at its other end on a lever, I, to which a succession of sharp vertical jars is imparted by damsel, J, projecting from the fan-shaft. This sudden vertical concussion, in combination with the peculiar surging side-shake incident to the mode of hanging the shoe, acts to separate the fine grains and seeds from the chaff before they reach the blast. The side agitation of the shoe is effected by a crank, K, upon the fan-sh aft, which crank communicates with the shoe through the medium of rods L M and bell-crank N. v Y

O is an adjustable rest, to enable the regulation of the vertical agitation.

Ive claim herein as new and of our invention The vertically and laterally agitated shoe B, having the riddle D in the upper front part of it immediately under the hopper and mainly out of the blast, in the described combination with a case, A A, having that part of it, A, which contains the shoe, so much wider than that part of it, A, which contains the fan, as to enable the interior width of the shoe at its front end to be equal to or somewhat in excess of the fan-case at its front end, as and for the OTIS W. STANFORD. A.- W. ORANEI Witnesses GEO. H. KNIGHT, ALEX. FRASER. 

